Air drying device of underwater pelletizing equipment

Abstract

The utility model discloses an air drying device of underwater pelletizing equipment. The air drying device is provided with a feeding end and a discharging end, the air-drying device comprises an outer cylinder, an inner cylinder, an air-drying device and a driving device, the outer cylinder is provided with a feeding port and a discharging port, and the feeding port and the discharging port are formed in the feeding end and the discharging end respectively; the inner cylinder is arranged in the outer cylinder, and the end part, close to the discharging end, of the inner cylinder is closed; an air-drying interlayer is formed between the inner cylinder and the outer cylinder, and is communicated with the feeding hole; one end, away from the discharging end, of the air-drying interlayer is closed; a plurality of air blowing holes are uniformly formed in the inner cylinder and are communicated with the air drying interlayer; the pushing spiral piece is arranged in the air drying interlayer and is fixed with the inner cylinder; the rotary driving device is fixedly mounted in the outer cylinder, and the rotary driving device drives the inner cylinder to rotate relative to the outer cylinder; and the first air blowing device is used for blowing air to the inner side of the outer cylinder. According to the scheme, the health of workers can be effectively guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of underwater pelletizing equipment, and in particular to the drying device for underwater pelletizing equipment. Background Technology

[0002] After the underwater pelletizing equipment finishes pelletizing, the pellets will pass through a cooling conveyor channel and a dewatering machine in sequence. The plastic pellets that have passed through the dewatering machine are not dry enough, so they need to pass through an air drying device to further improve the air drying effect of the plastic pellets, thereby improving the dryness of the plastic pellets and preventing the plastic pellets from sticking together or clumping, so as to ensure the stability of the product.

[0003] However, existing air-drying devices generally use a vibrating motor to generate vibrations that propel plastic particles forward. During this process, the plastic particles collide with each other, generating microplastics. Furthermore, due to the vibration, these microplastics are easily thrown into the air, making it easy for workers to inhale them, which is detrimental to their health. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an air-drying device for underwater pelletizing equipment, so as to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0005] The solution to the technical problem of this utility model is:

[0006] The drying device of the underwater pelletizing equipment is equipped with a feed end and a discharge end; the drying device includes:

[0007] The outer cylinder is provided with a feed inlet and a discharge outlet, which are respectively located at the feed end and the discharge end;

[0008] An inner cylinder is disposed inside the outer cylinder, and the end of the inner cylinder near the discharge end is closed; a drying interlayer is formed between the inner cylinder and the outer cylinder, and the drying interlayer is connected to the feed inlet; the end of the drying interlayer away from the discharge end is closed; the inner cylinder is evenly provided with a plurality of air blowing holes, and the air blowing holes are connected to the drying interlayer.

[0009] A pushing screw is disposed in the air-drying interlayer, and the pushing screw is fixed to the inner cylinder;

[0010] A rotary drive device is fixedly installed inside the outer cylinder, and the rotary drive device drives the inner cylinder to rotate relative to the outer cylinder;

[0011] A first air blowing device is used to blow air into the inner side of the outer cylinder.

[0012] As a further improvement to the above technical solution, a second air blowing device is also included. The second air blowing device is disposed at the feed inlet and is used to blow air into the feed inlet. The air pressure of the second air blowing device is greater than that of the first air blowing device.

[0013] As a further improvement to the above technical solution, the driving spiral is uniformly provided with multiple particle flipping protrusions.

[0014] As a further improvement to the above technical solution, the particle flipping protrusion is a hemispherical protrusion.

[0015] As a further improvement to the above technical solution, the side wall of the discharge port is provided with multiple vent holes.

[0016] As a further improvement to the above technical solution, the discharge port is a bent tubular component, and the lower end of the discharge port is set at an angle to the vertical direction.

[0017] As a further improvement to the above technical solution, an airflow blocking sleeve is also included. The airflow blocking sleeve is disposed inside the inner cylinder and is fixed relative to the outer cylinder. An air outlet is provided at the lower part of the airflow blocking sleeve.

[0018] As a further improvement to the above technical solution, it also includes an airflow heating device, which is fixed relative to the outer cylinder; the airflow blown out by the first blowing device is heated by the airflow heating device and then flows into the air-drying interlayer.

[0019] As a further improvement to the above technical solution, the outer cylinder includes a main cylinder body and a cap, wherein the main cylinder body and the cap are fixedly connected.

[0020] As a further improvement to the above technical solution, a sealing gasket is provided between the main cylinder and the cover.

[0021] The beneficial effects of this invention are as follows: When plastic particles enter the drying jacket from the feed inlet, they accumulate at the bottom of the drying jacket due to their own gravity. When the auger rotates, it propels the plastic particles towards the discharge outlet, thus achieving forward transport of the plastic particles. By using a spiral feeding method to transport the plastic particles, the use of a vibrating motor can be avoided, thereby reducing the number of plastic microparticles generated by collisions and preventing them from being blown into the surrounding environment. This also prevents workers from inhaling plastic microparticles for extended periods, effectively protecting their health.

[0022] This invention relates to the field of underwater pelletizing equipment technology. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of this utility model, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0025] Figure 2 This is an exploded structural diagram of the airflow blocking sleeve, inner cylinder, and pushing spiral component according to an embodiment of this utility model.

[0026] In the diagram, 100 is the outer cylinder; 110 is the discharge port; 120 is the feed port; 121 is the exhaust port; 200 is the inner cylinder; 210 is the air blowing port; 300 is the airflow blocking sleeve; 310 is the air outlet; 400 is the pushing screw; 410 is the particle turning protrusion; 500 is the rotation drive device; 600 is the first air blowing device; 700 is the second air blowing device; and 800 is the airflow heating device. Detailed Implementation

[0027] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages mentioned herein do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this invention can be combined interactively without contradicting each other.

[0028] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0030] After the underwater pelletizing equipment finishes pelletizing, the pellets will pass through a cooling conveyor channel and a dewatering machine in sequence. The plastic pellets that have passed through the dewatering machine are not dry enough, so they need to pass through an air drying device to further improve the air drying effect of the plastic pellets, thereby improving the dryness of the plastic pellets and preventing the plastic pellets from sticking together or clumping, so as to ensure the stability of the product.

[0031] However, existing air-drying devices generally use a vibrating motor to generate vibrations that propel plastic particles forward. During this process, the plastic particles collide with each other, generating microplastics. Furthermore, due to the vibration, these microplastics are easily thrown into the air, making it easy for workers to inhale them, which is detrimental to their health.

[0032] This solution was designed to address the aforementioned dust problem.

[0033] Reference Figure 1 and Figure 2 The drying device of the underwater pelletizing equipment is equipped with a discharge end and a feed end.

[0034] The air-drying device includes an outer cylinder 100, an inner cylinder 200, an airflow blocking sleeve 300, a pushing screw 400, a rotation drive device 500, and a first air blowing device 600.

[0035] Specifically, the outer cylinder 100 includes a cap and a main cylinder body. The two ends of the main cylinder body are closed, and the main cylinder body has a U-shaped groove. The cap is installed at the U-shaped opening of the main cylinder body to close the opening of the U-shaped groove. The cap and the main cylinder body are fixed together by multiple screws.

[0036] Specifically, a sealing gasket is provided between the cap and the main cylinder, and the outer circumferential surface of the sealing gasket abuts against both the cap and the main cylinder, thereby achieving a seal between the cap and the main cylinder.

[0037] The outer cylinder 100 is provided with a discharge port 110 and a feed port 120. The discharge port 110 is located at the discharge end, and the feed port 120 is located at the feed end. The feed port 120 is connected to the dewatering machine, and the actual shape of the feed port 120 is designed according to actual needs.

[0038] Specifically, in this embodiment, the side wall of the discharge port 110 is provided with a plurality of exhaust holes 121 that communicate with the outside. The diameter of the exhaust holes 121 is smaller than the diameter of the plastic particles. By setting a plurality of exhaust holes 121, the excessive wind pressure at the discharge port 110 can be avoided, which would cause the plastic particles to fall to other components and be blown up by the airflow.

[0039] Specifically, in this embodiment, the discharge port 110 is a bent tubular component. By setting the discharge port 110 as a bent tubular component, the plastic particles can be discharged at a certain angle to the vertical direction, thereby preventing the plastic particles from bouncing a high distance and thus preventing the plastic particles from detaching from the receiving structure or the structure for continued transportation.

[0040] The first air blowing device 600 is fixedly installed on the outer cylinder 100. The first air blowing device 600 is used to blow air into the inner side of the outer cylinder 100, and the blowing direction is from the feed end to the discharge end.

[0041] The inner cylinder 200 is disposed inside the outer cylinder 100, and the inner cylinder 200 and the outer cylinder 100 are rotatably connected. A drying interlayer is formed between the inner cylinder 200 and the outer cylinder 100. The drying interlayer is connected to the feed port 120. The end of the drying interlayer away from the discharge end is closed to ensure that the plastic particles move in the direction from the feed end to the discharge end.

[0042] Specifically, the inner cylinder 200 has multiple air-blowing holes 210 on its side wall, which penetrate the side wall of the inner cylinder 200, thus connecting the inner cavity of the inner cylinder 200 with the air-drying interlayer. The multiple air-blowing holes 210 are evenly distributed on the side wall of the inner cylinder 200.

[0043] Specifically, in this embodiment, the end of the inner cylinder 200 away from the feed end is closed. Closing one end of the inner cylinder 200 can restrict the direction of airflow so that the airflow can flow out from the air blowing hole 210 of the inner cylinder 200.

[0044] The airflow blocking sleeve 300 is fixedly connected to the outer cylinder 100 and is disposed in the inner cavity of the inner cylinder 200. The outer circumferential surface of the airflow blocking sleeve 300 abuts against the inner wall of the inner cylinder 200. An air outlet is provided at the lower part of the airflow blocking sleeve 300. The airflow blocking sleeve 300 is used to restrict the direction of the blown airflow so that the airflow can only flow out from the air outlet 310 and enter the drying interlayer through the air blowing hole 210 of the inner cylinder 200. This ensures that there is a sufficiently strong airflow at the point where the plastic particles are gathered, so that the plastic particles can be fully dried.

[0045] The rotary drive device 500 is a rotary motor. The rotary drive device 500 is fixedly installed on the outer cylinder 100. The output end of the rotary drive device 500 extends into the inner side of the outer cylinder 100 and is fixedly connected to the inner cylinder 200. The rotary drive device 500 drives the inner cylinder 200 to rotate relative to the outer cylinder 100 around a horizontal axis.

[0046] The pusher screw 400 is disposed in the air-drying interlayer. The pusher screw 400 extends spirally around the rotation axis of the inner cylinder 200. The pusher screw 400 is fixedly connected to the inner cylinder 200, so that the pusher screw 400 can rotate with the inner cylinder 200 relative to the outer cylinder 100.

[0047] Specifically, in this embodiment, the pushing spiral 400 is provided with particle-turning protrusions 410, and the number of particle-turning protrusions 410 is set to multiple, which are evenly distributed on the outer peripheral surface of the pushing spiral 400. During the rotation of the pushing spiral 400, the particle-turning protrusions 410 will come into contact with the plastic particles, thereby causing the plastic particles to turn, so that different parts of the plastic particles can be dried evenly.

[0048] Specifically, in this embodiment, the particle flipping protrusion 410 is a hemispherical protrusion. Setting the particle flipping protrusion 410 as a hemispherical protrusion can avoid contact between the relatively sharp structure and the plastic particle, thereby avoiding greater wear on the plastic particle and effectively protecting the appearance of the plastic particle.

[0049] When plastic particles enter the drying jacket through the feed inlet 120, they accumulate at the bottom due to their own gravity. When the screw 400 rotates, it propels the plastic particles towards the discharge outlet 110, thus achieving forward transport of the plastic particles. By using a screw-feed method to transport the plastic particles, the use of a vibrating motor can be avoided, thereby reducing the number of plastic microparticles generated by collisions and preventing them from being blown into the surrounding environment. This also prevents workers from inhaling plastic microparticles for extended periods, effectively protecting their health.

[0050] Specifically, in this embodiment, the air-drying device further includes a second air-blowing device 700, which is disposed at the feed inlet 120. The second air-blowing device 700 is used to blow air into the feed inlet 120, and the air pressure of the second air-blowing device 700 is greater than that of the first air-blowing device 600, thereby preventing the airflow from flowing out of the feed inlet 120 to the outside, so as to avoid the airflow from obstructing the plastic particles from entering the air-drying interlayer.

[0051] Specifically, in this embodiment, the drying device further includes an airflow heating device 800, which is fixedly installed on the outer cylinder 100. The airflow blown out by the first blowing device 600 is heated by the airflow heating device 800 and then flows into the drying interlayer. By setting the airflow heating device 800, the drying efficiency of plastic particles can be improved.

[0052] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A drying device for an underwater pelletizing equipment, characterized in that: It is equipped with a feed end and a discharge end; The air-drying device includes: The outer cylinder is provided with a feed inlet and a discharge outlet, which are respectively located at the feed end and the discharge end; An inner cylinder is disposed inside the outer cylinder, and the end of the inner cylinder near the discharge end is closed; a drying interlayer is formed between the inner cylinder and the outer cylinder, and the drying interlayer is connected to the feed inlet; the end of the drying interlayer away from the discharge end is closed; the inner cylinder is evenly provided with a plurality of air blowing holes, and the air blowing holes are connected to the drying interlayer. A pushing screw is disposed in the air-drying interlayer, and the pushing screw is fixed to the inner cylinder; A rotary drive device is fixedly installed inside the outer cylinder, and the rotary drive device drives the inner cylinder to rotate relative to the outer cylinder; A first air blowing device is used to blow air into the inner side of the outer cylinder.

2. The air-drying device according to claim 1, characterized in that: It also includes a second air blowing device, which is disposed at the feed inlet and is used to blow air into the feed inlet. The air pressure of the second air blowing device is greater than that of the first air blowing device.

3. The air-drying device according to claim 1, characterized in that: The driving spiral component is uniformly provided with multiple particle-turning protrusions.

4. The air-drying device according to claim 3, characterized in that: The particle flipping protrusions are hemispherical protrusions.

5. The air-drying device according to claim 1, characterized in that: The side wall of the discharge port is provided with multiple vent holes.

6. The air-drying device according to claim 1, characterized in that: The discharge port is a bent tubular component, and the lower end of the discharge port is set at an angle to the vertical direction.

7. The air-drying device according to claim 1, characterized in that: It also includes an airflow blocking sleeve, which is disposed inside the inner cylinder and fixed relative to the outer cylinder. The lower part of the airflow blocking sleeve is provided with an air outlet.

8. The air-drying device according to claim 1, characterized in that: It also includes an airflow heating device, which is fixed relative to the outer cylinder; the airflow blown out by the first blowing device is heated by the airflow heating device and then flows into the air-drying interlayer.

9. The air-drying device according to claim 1, characterized in that: The outer cylinder includes a main cylinder body and a cap, and the main cylinder body is fixedly connected to the cap.

10. The air-drying device according to claim 9, characterized in that: A sealing gasket is provided between the main cylinder and the cover.

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